pub type CKD_W<'a> = FieldWriter<'a, u32, CR1_SPEC, u8, CKD_A, 2, 8>;
Field CKD writer - Clock division
CKD
t_DTS = t_CK_INT
t_DTS = 2 × t_CK_INT
t_DTS = 4 × t_CK_INT